tracing mark造句

例句与造句

1. Analogue discs can also be electronically scanned and analysed by computer, although this analogue to digital conversion process still requires human expert interpretation for best results, due to imperfections in the source disc such as dirt and scratch marks in the wax surface that can be incorrectly read as trace marks.
2. It's difficult to find tracing mark in a sentence. 用tracing mark造句挺难的